Single-Family Disclosure Information Center

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Welcome to the Single-Family MBS Disclosure Information Center.

In preparation of the Single Security initiative in 2019, Fannie Mae will be transitioning from the current disclosure files to the aligned disclosure formats for MBS, Megas and Multiclass securities. Fannie Mae will provide documentation to assist users with the transition from our current files to our future format. Many of the existing disclosure files will be retired and the data will be transitioned into fewer files with consistent formats between the issuance and monthly files. In addition, the future disclosure files increases the data available for Single-Family securities.

We will continue to update this page with information about disclosure changes for both Single Class and Multiclass securities.

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